<?php
namespace common\models;

use Yii;
use yii\base\NotSupportedException;
use yii\behaviors\TimestampBehavior;
use yii\db\ActiveRecord;
use yii\web\IdentityInterface;

/**
 * User model
 *
 * @property integer $id
 * @property string $username
 * @property string $password_hash
 * @property string $password_reset_token
 * @property string $avatar_path
 * @property string $email
 * @property string $auth_key
 * @property integer $status
 * @property integer $created_at
 * @property integer $updated_at
 * @property string $password write-only password
 */
class User extends ActiveRecord implements IdentityInterface
{

    const STATUS_DELETED = 0;

    const STATUS_ACTIVE = 10;

    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return '{{%user}}';
    }

    /**
     * @inheritdoc
     */
    public function behaviors()
    {
        return [
            TimestampBehavior::className()
        ];
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [
                'status',
                'default',
                'value' => self::STATUS_ACTIVE
            ],
            [
                'status',
                'in',
                'range' => [
                    self::STATUS_ACTIVE,
                    self::STATUS_DELETED
                ]
            ]
        ];
    }

    /**
     * @inheritdoc
     */
    public static function findIdentity($id)
    {
        return static::findOne([
            'id' => $id,
            'status' => self::STATUS_ACTIVE
        ]);
    }

    /**
     * @inheritdoc
     */
    public static function findIdentityByAccessToken($token, $type = null)
    {
        throw new NotSupportedException('"findIdentityByAccessToken" is not implemented.');
    }

    /**
     * Finds user by username
     *
     * @param string $username
     * @return static null
     */
    public static function findByUsername($username)
    {
        return static::findOne([
            'username' => $username,
            'status' => self::STATUS_ACTIVE
        ]);
    }

    /**
     * Finds user by password reset token
     *
     * @param string $token
     *            password reset token
     * @return static null
     */
    public static function findByPasswordResetToken($token)
    {
        if (! static::isPasswordResetTokenValid($token)) {
            return null;
        }

        return static::findOne([
            'password_reset_token' => $token,
            'status' => self::STATUS_ACTIVE
        ]);
    }

    /**
     * Finds out if password reset token is valid
     *
     * @param string $token
     *            password reset token
     * @return boolean
     */
    public static function isPasswordResetTokenValid($token)
    {
        if (empty($token)) {
            return false;
        }

        $timestamp = (int) substr($token, strrpos($token, '_') + 1);
        $expire = Yii::$app->params['user.passwordResetTokenExpire'];
        return $timestamp + $expire >= time();
    }

    /**
     * @inheritdoc
     */
    public function getId()
    {
        return $this->getPrimaryKey();
    }

    /**
     * @inheritdoc
     */
    public function getAuthKey()
    {
        return $this->auth_key;
    }

    /**
     * @inheritdoc
     */
    public function validateAuthKey($authKey)
    {
        return $this->getAuthKey() === $authKey;
    }

    /**
     * Validates password
     *
     * @param string $password
     *            password to validate
     * @return boolean if password provided is valid for current user
     */
    public function validatePassword($password)
    {
        return Yii::$app->security->validatePassword($password, $this->password_hash);
    }

    /**
     * Generates password hash from password and sets it to the model
     *
     * @param string $password
     */
    public function setPassword($password)
    {
        $this->password_hash = Yii::$app->security->generatePasswordHash($password);
    }

    /**
     * Generates "remember me" authentication key
     */
    public function generateAuthKey()
    {
        $this->auth_key = Yii::$app->security->generateRandomString();
    }

    /**
     * Generates new password reset token
     */
    public function generatePasswordResetToken()
    {
        $this->password_reset_token = Yii::$app->security->generateRandomString() . '_' . time();
    }

    /**
     * Removes password reset token
     */
    public function removePasswordResetToken()
    {
        $this->password_reset_token = null;
    }

    /**
     * 生成和存储每个用户的认证密钥
     *
     * @see \yii\db\BaseActiveRecord::beforeSave($insert)
     */
    public function beforeSave($insert)
    {
        if (parent::beforeSave($insert)) {
            if ($this->isNewRecord) {
                $this->auth_key = \Yii::$app->security->generateRandomString();
                // TODO:后续如有userinfo表，可在此处new一条
            }
            return true;
        }
        return false;
    }

    /**
     * Ucenter 检查用户名
     */
    public function checkname()
    {
        // 包含ucenter
        include_once dirname(Yii::$app->basePath) . '/frontend/web/uc_client/client.php';
        // 1:成功 -1:用户名不合法 -2:包含要不允许注册的词语 -3:用户名已经存在
        $flag = uc_user_checkname($this->username);
        switch ($flag) {
            case - 1:
                return '用户名不合法';
                break;
            case - 2:
                return '包含不允许注册的词语';
                break;
            case - 3:
                return '用户名已经存在';
                break;
        }
        return true;
    }

    /**
     * Ucenter 检查 Email 地址
     */
    public function checkemail()
    {
        // 包含ucenter
        include_once dirname(Yii::$app->basePath) . '/frontend/web/uc_client/client.php';
        // 1:成功 -4:Email 格式有误 -5:Email 不允许注册 -6:该 Email 已经被注册
        $flag = uc_user_checkemail($this->email);
        switch ($flag) {
            case - 4:
                return 'Email 格式有误';
                break;
            case - 5:
                return 'Email 不允许注册';
                break;
            case - 6:
                return '该 Email 已经被注册';
                break;
        }
        return true;
    }

    /**
     * Ucenter 获取用户数据
     */
    public function getUcinfo()
    {
        // 包含ucenter
        include_once dirname(Yii::$app->basePath) . '/frontend/web/uc_client/client.php';
        // 如用户不存在，返回值为 integer 的数值 0。 否则返回数组integer[0]用户 ID；string[1]用户名；string[2]Email
        $flag = uc_get_user($this->username);
        if (is_array($flag)) {
            return $flag;
        }
        return '用户不存在';
    }
}
